I'm in this picture and I don't like it.

half duplex mode

Names are too common. I can easy-ish remember animals names.

That's fine, I can ask you again.

But what really annoys me are those which name I still cannot accoustically understand after the 4th time asking. They most probably do this on purpose, since I can understand each word they say, except for their name.

Names are arbitrary most of the times anyways, you might as well make one up at this point.